Decentralized File Sharing Project (D-FILE)

This repository hosts the code for D-FILE, a decentralized file-sharing platform akin to Google Drive, developed using Hardhat, Solidity (Smart Contracts), and React.js. By leveraging blockchain technology, D-FILE ensures secure, transparent, and decentralized file storage and access control.

Table of Contents

• Installation
• Usage
• Architecture
• Smart Contract Features
• Frontend Features
• Contributing
• License

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Installation

Follow these steps to set up and run the D-FILE project on your local machine:

1. Clone the repository:

   git clone https://github.com/pushpakrai/Decentralized-Blockchain-File-Sharing-Application.git

2. Navigate to the project directory:

   cd Decentralized-Blockchain-File-Sharing-Application

3. Install dependencies for the smart contract:

   npm install

4. Set up the frontend:

   • Navigate to the client directory:

     cd client

   • Install the Node.js dependencies:

     npm install

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Usage

1. Start a local blockchain network:

   npx hardhat node

2. Deploy the smart contract:

   • Compile and deploy the smart contract to the local network:

     npx hardhat run --network localhost scripts/deploy.js

3. Launch the frontend application:

   • Navigate to the client directory:

     cd client

   • Start the development server:

     npm start

4. Access the application: Open your browser and navigate to http://localhost:3000. Ensure MetaMask is connected to the local blockchain network.

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Architecture

The D-FILE platform employs the following technologies:

• Hardhat: Facilitates smart contract development, testing, and deployment.
• Solidity: Implements the business logic for file storage, access control, and ownership management on the blockchain.
• React.js: Provides an intuitive user interface for interacting with the decentralized file system.
• Pinata: Used for decentralized file storage, ensuring redundancy and security.

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Smart Contract Features

The Solidity smart contract handles core functionalities, including:

• File Upload: Links uploaded files to the blockchain and stores metadata securely.
• Access Control: Grants or revokes permissions for specific users.
• Ownership Management: Transfers file ownership securely between users.
• Tamper-Proof Logs: Maintains immutable records of all file-related transactions.

The contract code is in the contracts directory.

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Frontend Features

The D-FILE frontend, built with React.js, offers:

• User Authentication: Connect your wallet via MetaMask for secure access.
• File Management:
  • Upload and view files stored on the blockchain.
  • Download files directly from decentralized storage.
  • Delete or modify file permissions.
• Access Permissions: Enable or restrict other users' access to specific files.
• Ownership Transfer: Securely transfer file ownership to designated users.

Frontend source code resides in the client directory.

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Contributing

We welcome contributions to enhance the D-FILE project! Here's how to get involved:

1. Fork the repository.
2. Create a feature branch:

   git checkout -b feature-name

3. Implement changes and commit:

   git commit -m "Add feature description"

4. Push changes to your forked repository:

   git push origin feature-name

5. Open a pull request, detailing your enhancements or fixes.

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License

This project is licensed under the MIT License. For more details, refer to the LICENSE file.